Tuning circuit having electronically trimmed VCO

发明授权

US06806781B2 Tuning circuit having electronically trimmed VCO 有权

标题翻译：调谐电路具有电子调整VCO

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专利标题： Tuning circuit having electronically trimmed VCO
专利标题（中）： 调谐电路具有电子调整VCO
申请号： US09815831

申请日： 2001-03-23
公开(公告)号： US06806781B2

公开(公告)日： 2004-10-19
发明人: Biagio Bisanti , Francesco Coppola , Pascal Guignon
申请人： Biagio Bisanti , Francesco Coppola , Pascal Guignon
优先权： EP00402561 20000915
主分类号： H03L700
IPC分类号： H03L700

Tuning circuit having electronically trimmed VCO

摘要：

A voltage controlled oscillator (38) includes an LC tank (20) and a capacitor bank (21). LC tank (20) includes an inductor (12) and a varactor (14). The capacitive output of the varactor is controlled by a control voltage &ngr;. To electronically tune the voltage controlled oscillator, a set of capacitors (24) in the capacitor bank (21) are enabled by a digital control signal based on a frequency comparison with a desired frequency. Once the capacitor bank is set, the frequency can be locked at the desired frequency by the phase lock loop.

摘要（中）：

压控振荡器（38）包括LC箱（20）和电容器组（21）。 LC箱（20）包括电感器（12）和变容二极管（14）。变容二极管的电容输出由控制电压nu控制。为了电压调节压控振荡器，电容器组（21）中的一组电容器（24）通过基于与期望频率的频率比较的数字控制信号来实现。一旦电容器组被置位，频率可以通过锁相环锁定在所需的频率。

公开/授权文献

US20020033739A1 Electronically trimmed VCO 公开/授权日：2002-03-21

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